Maker



R. E K A .Nm Wu K 0 Patented Oct. 30, 1894.

I. WITNESSES.-

B) I J ATTORNEYS.

mm. WASHINGTON, D a

UNITED STATES PATENT OFFICE.

CHARLES B. WANAMAKER, E 'ALLENTOWN, PENNSYLVANIA, ASSIGNOR or ONE-HALFT0 WILLIAM H. HUNSIOKER, OF sAME PLAoE.

HEATER.

SPECIFICATION forming part of Letters Patent No. 528,404, dated October30, 1894. Application filed April 4, 1894. Serial No. 506,327. (Nomodel.) 7

A scription.

The invention relates to hot water heating systems, and its object is toprovide a new and improved heater, which is simple and durable inconstruction, and arranged to quickly heat the water to establish arapid circulation of the Water in the entire system. v

The general construction and arrangement of parts are hereinafterdescribed, and the features of novelty specifically indicated.

Reference is to be had to the accompanying drawings, forminga part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 is a front elevation of the improvement with parts in section.Fig. 2 is a transverse section' of the same on the line 2-2 of Fig. 4.Fig. 3 is a plan view of the same; and Fig. 4 is a sectional plan viewof the improvement on the line 44 of Fig. 2.

The improved heater is provided with the usual base A, on which is set acasing B, preferably made of one single casting and formed with aninterior heating chamber C, surrounded on its sides and top by a waterchamber D, as plainly illustrated in the drawings. Afuel inlet E, isarranged in thesaid casing B to permit of introducing fuel to the gratebars F, extending into the bottom of the chamber O, the said grate barsbeing held in the usual manner in the top of the base A and may be ofany approved construction.

The base A forms the usual ash pit provided with a door G for theremoval of the ashes. From the upper end of the heating chamber 0extends the smoke outlet J, through the chamber D to connect at itsouter end with the smoke flue J, as shown in the drawings. Into thewater chamber D lead the return pipes H, at or near the lower part ofthe said chamber, and from the top of the latter extend the outflowpipes I, through which the water rises to the several radiators in thebuilding to give off heat and then reof the water chamber D to bereheated.

Now, in order to establish a rapid circulation of the water in thesystem and to quickly heat the water, I provide a coil of pipe K,arranged in the heating chamber 0 and centrally therein, the lower endof the said coil of pipe being connected by a coupling and nipple K,with the lower part of the water chamber D, as plainly shown in Fig. 2.The upper end of the said coil K is likewise connected by a coupling andnipple K with the upper part of the chamber D, so that the heat in theheating chamber 0 beats the said coil and the Water contained therein,to cause the water to circulate quickly through the coil of pipe K andto pass into the upper end of the water chamber D, to then flow throughthe pipes I into the radiators in the building. By this arrangement avery rapid circulation of the water is established, not only in thewater chamber D, but also in the outflow and return pipes I and H, aswell as the radiators connected with the said pipes.

It will further be seen that the water in the water chamber D on accountof surrounding the heating chamber 0, is heated from the heat in thesaid chamber, so that the fuel burned on the grate bars F is utilized tothe fullest advantage. The coil of pipe K is arranged centrally in theheating chamber 0 and surrounds a magazine tube L, extending at itsupper end through a pipe N, formed in the top of the chamber 0 andpassing through the water chamber D to the top thereof, the upper end ofthe said magazine tube L being adapted to be closed by a lid or cap 0.

It will be noted, that the coils ofpipe, K, not only extend fromthe'lower end of the tube, L, to near its upper end, but are close toeach other and to the tube, whereby a maximum exposed heating surface isprovided along with the most compact arrangement possible so that aminimum amount ofspace is occupied in the chamber, 0, thus leaving alarge space for passage and circulation and combustion of gases.

The tube L is provided with a number of apertures L, so that the heat,gases, fumes, smoke, &c., passing up into the said magazine turn throughthe pipes H into the lower part tube can readily pass through theapertures to the interior of the chamber 0, to finally pass to the smokeflue J together with the other gases, fumes, &c., arising from theburning fuel in the heating chamber.

It will further be seen that a heater having its casing B made in asingle casting greatly reduces the cost of manufacturing the same, atthe same time insuring rapid circulation of the water in the system, asabove described.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent A heater, comprising a casing forming a heatingchamber, a water chamber surrounding the said heating chamber, returnwater pipes discharging into the lower part of the said water chamber,outflow pipes leading from the top of the said water chamber, a coil ofpipe arranged within the said heating chamber and connected at its endswith the lower and upper parts of the said water chamber, and anapertured magazine tube extending centrally into the said heatingchamber and surrounded by the said coil of pipe, the upper end of thesaid magazine tube being adapted to be closed by a cover, substantiallyas shown and described.

CHARLES E. WVANAMAKER. Witnesses:

AARON R. GRENET, TILGHMAN D. FREY.

